Pathology

Nanotechnology

Organic chemistry

Shape-memory polymer

Polymer chemistry

Polybutadiene

Dual (grammatical number)

Hydrogen bond

Literature

Glass transition

Engineering

Catalysis

Copolymer

Composite material

Ionic bonding

Chemistry

Materials science

Triple bond

Alternative medicine

Self-healing

Imine

Molecule

Shape-memory alloy

Chemical engineering

Polymer

Double bond

Medicine

Plasticity

ACS Applied Materials & Interfaces

Fabricating a single polymer network with a combination of a multi-shape memory effect (multiple-SME), solid-state plasticity, recyclability and self-healing behavior remains a challenge. We designed imine bond and ionic hydrogen bond dual cross-linked polybutadiene (PB) networks. The resulting PB networks showed a triple-shape memory effect, where imine bonds could be used to fix the permanent shape and ionic hydrogen bonds and glass transition acted as the transition segments for fixing/releasing the temporary shapes. Additionally, the dual dynamic bonds offered PB networks outstanding solid-state plasticity, recyclability and self-healing behavior. This strategy provides some insights for preparing shape memory polymers integrating multiple-SME and multi-functionality.

Recyclable, Self-Healing, Thermadapt Triple-Shape Memory Polymers Based on Dual Dynamic Bonds